
public class StringTest {
	public static void main(String[] args) {
		System.out.println(substringtest());
	}
	
	public static String substringtest(){
		String test = "1교시";
		return test.substring(0, 1);
	}
	
	public static String lengthtest(){
		String test = "30분1";
		return ""+test.length();
	}
}
